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The F999B Super Sensitive Listen Thru-wall Contact/Probe Microphone Amplifier System is a professional-grade surveillance tool designed to detect sound through solid surfaces like concrete, metal, and wood. Featuring 20000x amplification, four audio channels, and up to 24 hours of continuous battery life, it delivers superior sensitivity and durability in a compact metal housing. Ideal for discreet monitoring, it connects easily via 3.5mm jack to a wide range of devices and comes with a 5-year warranty for peace of mind.
| ASIN | B01L9AMY9Y |
| Antenna Location | Investigation, Surveillance |
| Audible Noise | 70 db |
| Audio Sensitivity | 70 db |
| Best Sellers Rank | #295,800 in Electronics ( See Top 100 in Electronics ) #1,637 in Audio Component Amplifiers |
| Brand | Kstpower |
| Built-In Media | amplifier, battery, warranty card |
| Color | silver |
| Compatible Devices | ['Smartphone', 'Laptop', 'Personal Computer', 'Tablet', 'Camera', 'Headphone', 'Radio', 'Speaker', 'Karaoke Machine', 'Amplifier', 'Gaming Console'] |
| Connectivity Technology | Auxiliary |
| Connector Type | 3.5 mm Jack |
| Customer Reviews | 3.4 3.4 out of 5 stars (26) |
| EU Spare Part Availability Duration | 5 years |
| Enclosure Material | Wood |
| Frequency Response | 20 KHz |
| Impedance | 32 ohm |
| Item Dimensions | 9.06 x 7.09 x 2.76 inches |
| Manufacturer | Kstpower |
| Mfr Part Number | F999B |
| Microphone Form Factor | Mini |
| Model Name | F999B |
| Model Number | F999B |
| Number of Channels | 4 |
| Polar Pattern | Omnidirectional |
| Power Source | Battery Powered |
| Signal-to-Noise Ratio | 70 db |
| Special Feature | 3.5mm jack |
| UPC | 723800422475 |
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